rule win_trochilus_rat_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-10-14"
        version = "1"
        description = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.5.0"
        tool_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.trochilus_rat"
        malpedia_rule_date = "20201014"
        malpedia_hash = "a7e3bd57eaf12bf3ea29a863c041091ba3af9ac9"
        malpedia_version = "20201014"
        malpedia_license = "CC BY-SA 4.0"
        malpedia_sharing = "TLP:WHITE"

    /* DISCLAIMER
     * The strings used in this rule have been automatically selected from the
     * disassembly of memory dumps and unpacked files, using YARA-Signator.
     * The code and documentation is published here:
     * https://github.com/fxb-cocacoding/yara-signator
     * As Malpedia is used as data source, please note that for a given
     * number of families, only single samples are documented.
     * This likely impacts the degree of generalization these rules will offer.
     * Take the described generation method also into consideration when you
     * apply the rules in your use cases and assign them confidence levels.
     */


    strings:
        $sequence_0 = { 68???????? 8d4de0 897df4 8975f0 668945e0 e8???????? ffb570ffffff }
            // n = 7, score = 100
            //   68????????           |                     
            //   8d4de0               | lea                 ecx, [ebp - 0x20]
            //   897df4               | mov                 dword ptr [ebp - 0xc], edi
            //   8975f0               | mov                 dword ptr [ebp - 0x10], esi
            //   668945e0             | mov                 word ptr [ebp - 0x20], ax
            //   e8????????           |                     
            //   ffb570ffffff         | push                dword ptr [ebp - 0x90]

        $sequence_1 = { 8d8d7cffffff e8???????? 8d857cffffff 50 57 e8???????? 8bc8 }
            // n = 7, score = 100
            //   8d8d7cffffff         | lea                 ecx, [ebp - 0x84]
            //   e8????????           |                     
            //   8d857cffffff         | lea                 eax, [ebp - 0x84]
            //   50                   | push                eax
            //   57                   | push                edi
            //   e8????????           |                     
            //   8bc8                 | mov                 ecx, eax

        $sequence_2 = { 0f850a010000 39bba8010100 0f85fe000000 b98c1d0110 e8???????? 8bf0 8d4324 }
            // n = 7, score = 100
            //   0f850a010000         | jne                 0x110
            //   39bba8010100         | cmp                 dword ptr [ebx + 0x101a8], edi
            //   0f85fe000000         | jne                 0x104
            //   b98c1d0110           | mov                 ecx, 0x10011d8c
            //   e8????????           |                     
            //   8bf0                 | mov                 esi, eax
            //   8d4324               | lea                 eax, [ebx + 0x24]

        $sequence_3 = { 8bf1 57 8d5e0c 53 ff15???????? 8b7d08 8b450c }
            // n = 7, score = 100
            //   8bf1                 | mov                 esi, ecx
            //   57                   | push                edi
            //   8d5e0c               | lea                 ebx, [esi + 0xc]
            //   53                   | push                ebx
            //   ff15????????         |                     
            //   8b7d08               | mov                 edi, dword ptr [ebp + 8]
            //   8b450c               | mov                 eax, dword ptr [ebp + 0xc]

        $sequence_4 = { 8b8704020100 894654 8b8720020100 894660 }
            // n = 4, score = 100
            //   8b8704020100         | mov                 eax, dword ptr [edi + 0x10204]
            //   894654               | mov                 dword ptr [esi + 0x54], eax
            //   8b8720020100         | mov                 eax, dword ptr [edi + 0x10220]
            //   894660               | mov                 dword ptr [esi + 0x60], eax

        $sequence_5 = { e8???????? 8d4da0 e8???????? 56 6a01 8d4de0 e8???????? }
            // n = 7, score = 100
            //   e8????????           |                     
            //   8d4da0               | lea                 ecx, [ebp - 0x60]
            //   e8????????           |                     
            //   56                   | push                esi
            //   6a01                 | push                1
            //   8d4de0               | lea                 ecx, [ebp - 0x20]
            //   e8????????           |                     

        $sequence_6 = { ab 33c0 899de0fbffff 8dbde4fbffff ab ab }
            // n = 6, score = 100
            //   ab                   | stosd               dword ptr es:[edi], eax
            //   33c0                 | xor                 eax, eax
            //   899de0fbffff         | mov                 dword ptr [ebp - 0x420], ebx
            //   8dbde4fbffff         | lea                 edi, [ebp - 0x41c]
            //   ab                   | stosd               dword ptr es:[edi], eax
            //   ab                   | stosd               dword ptr es:[edi], eax

        $sequence_7 = { 33c0 688c010000 66898534feffff 33db 8d8536feffff }
            // n = 5, score = 100
            //   33c0                 | xor                 eax, eax
            //   688c010000           | push                0x18c
            //   66898534feffff       | mov                 word ptr [ebp - 0x1cc], ax
            //   33db                 | xor                 ebx, ebx
            //   8d8536feffff         | lea                 eax, [ebp - 0x1ca]

        $sequence_8 = { 5e c3 55 8bec 8b4508 50 68???????? }
            // n = 7, score = 100
            //   5e                   | pop                 esi
            //   c3                   | ret                 
            //   55                   | push                ebp
            //   8bec                 | mov                 ebp, esp
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   50                   | push                eax
            //   68????????           |                     

        $sequence_9 = { ffb308010100 ff15???????? 85c0 7404 6a0f ebd3 57 }
            // n = 7, score = 100
            //   ffb308010100         | push                dword ptr [ebx + 0x10108]
            //   ff15????????         |                     
            //   85c0                 | test                eax, eax
            //   7404                 | je                  6
            //   6a0f                 | push                0xf
            //   ebd3                 | jmp                 0xffffffd5
            //   57                   | push                edi

    condition:
        7 of them and filesize < 630784
}